1. Having seven units or components
   - septuple, seven-fold

1. Seven times
   "the population of this village increased sevenfold in the past 100 years"

See also: multiple

• family Cicadellidae
• family Cicadidae
• family Cichlidae
• family Cicindelidae
• family Ciconiidae
• family Cimicidae
• family Cinclidae
• family circle
• family Cistaceae
• family Cladoniaceae
• family Clathraceae
• family Clavariaceae
• family Cleridae
• family Clethraceae
• family Clinidae
• family Clupeidae
• family Clusiaceae
• family Cobitidae
• family Coccidae
• family Coccinellidae
• family Coerebidae
• family Colchicaceae
• family Colubridae
• family Columbidae
• family Comatulidae